I do a good bit of my limited business online and so far haven't had a problem. I do check CC and bank accounts regularly, looking for irregularities. Very careful about who gets what information and pretty well covered on my pc security wise, keeping in mind that those yahoos out there are still trying to wreck my pc and life!
PS: Being a distrustful person helps but I got to be careful about being stupid!
Heres a LINK for those who like to live dangerously and conduct business online.